On a couple of Addon Aircraft I have tried to install, I don't see the entire aircraft displayed, only parts of the aircraft (say te pilots, interior and engines or propeller.
The rest of te aircraft is missing in the game display.
All the required components (model, sound, texture,panel folders and cfg and air files) are in place in the airplane folder.
Any ideas why I don't see the complete airplane?
The wings fuselage wheels etc. are not being displayed.
As a test, shut off autogen, clouds, shadows and AI and see if that helps.
The aircraft may be too graphic intensive for you computer or video card to handles, this will take a load off it.